Steel flooring



L. FOGHT STEEL FLOORING Jan. 3, @39a Filed March l2, 1957 atented VJane 43, 1939 ics 5 Claims.

This application is a continuation in part of my co-pending application S. N. 670,292, filed May 10, 1933, for Floor-supporting structure and more particularly shows and describes a further 5 modification of the broad invention claimed in said prior application, in which said modification the special anti-creep means for preventing the superposed paving layer from shiftingits position as the result of tractiomproduced stresses l is more positive in its action than is either of the modifications shown in my said prior application.

In substance the further specific improvement herein shown and claimed comprises the use of fins extending transversely of the direction of l such traction stresses and projecting above the 'level of the steel floor base, each of said fins being anchored between a pair of adjacent, inverted channel members forming a part of such floor proper.

' 20 Preferably such fins are formed. according to the present invention by having certain ofthe T-irons which are held between said channel members each provided with an extra high web portion, the free edge portion of which will project above the plane of the webs of ,the channel members and between two adjacent rows of pa-ving blocks, though such fins may be otherwise installed in such position.

The best form of structure embodying my invention at present known to me,y together with one modification, are shown in the accompanying sheet of drawings in which:

Fig. l is a fragmentary, isometric view of the construction employing extended T-iron webs, and

Fig. 2 is a similar view showing a separate nforming strip held between adjacent channelv members.

Throughout the drawing like reference characters `indicate like parts.

Referring-to Fig. 1, I, I, indicate the bridge stringers or other portions of the bridge oor' supporting structureren which the deck structure of myinvention is directly supported. 2, 2, are

channel beams or channel irons or similar channel members of any standard rolled type -and cross section arranged with their flanges adjacent one to another, and all the channels on vtheir under surfaces; so thatl the exterior surfaces of their webs are all in substantially one and the same plane forming the major portion of the upper surface of the structure soassembled. 3, 3, are T-irons the webs of which are inserted between the adjacent flanges of the 56 channel members 2, 2, and are fastened thereto (ci. isa-34) by riveting, welding or in any other desired mann ner. The T-irons are so arranged that their flanges project beyond and extend across below the free edges of the channel members flanges.

The webs of the T-irons 3, 3, preferably have 5 their free edges substantially flush withv the plane of the channel members webs, but selected` T-irons i3, spaced apart any proper distance (say `30 feet), have extra high webs, the outer edgey portions t of which project as ns above l() the surface of the steel door and between the two adjacent rows of paving blocks l, l.

A copper ashing sheet 3l is preferably bent over this T-iron web and a continuous sheet of waterproof fabric 5v is placed over the flashing l5 and the rest of the floor, being pre-molded -to fit closely around the flashing if desired.

t indicates a cushion course of an originally plastic composition, such as sand "and cement or similar materials, spread over the floor spaces 20 between fins, and in which the paving blocks l, l,

l" may be set before it hardens, if desired.

These anti-creepns are usually spaced apart about 30 feet, and in case the main oor beams of a bridge are about the right distance one from 25 another to fit into this requirement, or any other fixed by the bridge designer the ns can be conveniently arranged over said beams by forming them of separate strips of steel' set between the floor expansion joint parts, which expansion 30 joints are always located over such beams. If that is done the necessity of having special T- irons with extra high webs such as previously described and indicated at i3 can be avoided.

Such a construction is illustrated in Fig. 2 35 whereV 30 represents a portion of one of the floor beams, such as above referred to, which usually extend crosswise of the bridge between the lower chordsv of the main trusses supporting them. 34 indicates an upright steel'strip set on edge and 40 extending along the top surface of such floor beam 30 and having special angle plates fastened to it at either side, the lowermost `pair serving ,i to hold it .upright on the beam. 35, 35, indicate the upper pair of angle plates, on the horizon- 45 tally'extending portions of which rest the wider, horizontally extending anges of special angle plates 36, 36, the narrower, vertically extend ing flanges of which are fastened to the Webs of adjacent T-irons `3, 3, in adjacent oor units, 50- so'that ,their upper surfaces lie in the plane of the fioor thereby formed. The overlapping portions of the horizontally extending flanges of the special angle plates 35 and 36 thus-form local expansion joints for the steel flooring as a whole. s

The construction lshown in 2 therefore serves both as an expansion joint for the steel flooring and also to present an anti-creep iin or diaphragm for preventing movement of any paving or surfacing material supported by the floorgether with said channel members inverted and their webs all lying in one and the sa'me plane while .the webs of said T-lrons are fastenedbetween adjacent anges of said channel members with the T-iron flanges' extending below and beyond the edges of said channel members flanges, together with a lesser number of vertically elongated fin members extending from between certain of said channel members above the level of the latter for penetrating any pa'vement laid thereon, said n members thereby forming anticreep devices for preventing any sliding of any A pavement laid on said iiooring which might otherwise' result from the traction stresses applied thereto by motorized traffic passing thereover.

2. A structure such/as defined in claim 1 in which each of said n members is formed by the edge portion of an extra high web on one of said T-irons which projects above the level of adjacent channel-members.

` 3. A combined expansion joint for steel bridge fioorings and anti-creep device for pavements supported thereon which comprises a main floor beam, two sets of .stringers each supported at one end thereon, and smooth surfaced steel oor units supported on said stringers and adjacent either side of said beam, together with a metal strip set on edge upon and extending along the top surface of said beam, angle plates fastened to either side of said strip with their horizontally extending portions slightly below the level of the upper surfaces of said oor units, and a plate /fastened to each adjacent end'of a oor unit andextending in ,the plane thereof over and loosely upon the horizontally extending portion of the adjacent angle plate nearly to the said metal strip, the upper edge portion of said strip extending above the surfaces of said plates far enough to form an anti-creep fin for any pavement thereon in which it would be embedded.

4. As a new article of manufacture, a. floor structure for bridges and like purposes comprising a plurality of standard rolled channel members arranged with Athe exterior surfaces of their flanges closely adjacent one to another and the exterior surfaces of their webs all in substantially one and the same plane, said members being combined with a plurality of supporting members .each having a flat section confined between two adjacent flanges of said rst mentioned channel members and fastened thereto in positions such that the upper portions of some of them form vertically disposed fins which project above and cooperate with the upper surfaces of said channel members to form keying means for preventing lateral displacement of any paving material which Amay be applied -to such upper surfaces, while their lower portions project below the flanges of said channel members and thus serve as supports for the assembled structure and for resisting tension stresses developing in said structure when in use as a iioor.

5. A floor structure for bridges and the like comprising, in combination, a plurality of rolled steel channel embers and supporting members fastened together with said channel members inverted and their webs al1 lying in substantially the same plane, iat sections of said supporting members being fastened between adjacent anges of said channel members and extending beyond the free edges of said flanges, a pavement comprising a layer of initially plastic material and block members embedded therein superposed on said channel members, and a plurality of elongated fin members extendingjertically from between certain of said channel members above the surface thereof to positions intermediate numbers of said block members, said iin members thereby forming anti-creep dei'zices for preventing any sliding'of said pavement which might otherwise result from 'traction forces thereon.

' LOUIS FOCHT. 

